Some lore stuff
Void Eggyhead is from an alternate timeline where, during the very early Inkperial Era, Eggyhead was tricked by the Exotic Creator into working with them to help reach the Exotic Creator's false goals of peace. After agreeing, Eggyhead let himself be tested on, and when his guard was down, they brought him to a lab and tested a special weapon designed to absorb anything in radius of the blast on him. However, the weapon backfired, as it tried to absorb Eggyhead, it woke up Wormwood (the angel inside eggy), but only partially. He was caught between a state of life and death that confused the scientists. His body was stuck in the state of absorption because the angel, even if partially awake, refused to give in. Because of the sustained absorption effect, it began to creep towards the surrounding area, pulling in objects and even people. They all were absorbed, and a thick white aura began to form around him, growing larger as it pulled in more things. Eggyhead tried to leave, and go to his friends and family for help, but they all mistook him for an enemy taking Eggyhead's face. He accidentally absorbed people he cared about, and tried to run away, but just caused more destruction as the area around him became all white as it pulled in more and more. Before he knew it, Eggyhead had pulled an entire planet into himself. He tried to fight it but he eventually realized that the only thing he could do to protect the people he cared about was to stop. So he remained, floating in the abyss of space, surrounded by a titanic white mass, and, as much as it hurt him, finally accepted that his fate was to be a deadly star for the rest of his existence.